The **`stack.empty()`** function in C++ returns a true  value (1) if the stack is empty. Otherwise, it returns false (0). In short, this function is used to check if the stack is empty.

The following illustration shows a visual representation of the `stack.empty()` function.

In order to use the `stack.empty()` function, we must include `stack` in the program, as shown below:

```c++
#include <stack>
```
#     
#  Syntax

```c++
stack_name.empty()
// where the stack_name is the name of the stack
```
## Parameters

This function does not require any parameters.

## Return value

If the queue is empty, the `stack.empty()` function returns a true value (1). Otherwise, it returns false (0).

##    
## Code

#include <iostream>
//header file
#include <stack>
using namespace std;

int main() {
  //filled stack
  stack<int> stack1;
    stack1.push(0);
    stack1.push(2);
    stack1.push(5);
    stack1.push(3);
    stack1.push(1);
    //stack1 = 1->3->5->2->0
    cout<<"stack1 is empty: \n"<<stack1.empty()<<"\n"; 

  //empty stack  
  stack<int> stack2;
    cout<<"stack2 is empty: \n"<<stack2.empty(); 
}

What is stack.empty() in C++?

stack.empty() checks if a stack is empty, returning true if empty, otherwise false.